Celotex Isover

Online Insulation U-value Calculator

The Saint-Gobain Insulation UK U-value calculator gives you instant access to calculating a proposed insulation thickness and product selection or giving an indicative calculation on a proposed construction detail.

U-value Calculator
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Use the calculator

The Saint-Gobain Insulation UK online U-value calculator covers a variety of different insulation applications.

Specify your desired U-value before immediately calculating the required insulation thickness and product selection!

Work through your own construction detail to get an early indication of the U-value that this might achieve!

To access the Saint-Gobain Insulation UK U-value Calculator, and download your calculation PDFs, you must log in to the Members Area, if you’re not already a member, it is quick and easy to register!


Register now to use the Calculator Calculator Icon

Further information

If you require further help or guidance on an already created U-value calculation or for bespoke calculations and would like to speak with an advisor, please contact our Technical Support Team on 01473 820850.

Lines are open Monday – Friday, from 9.00am – 5pm.

Please note, some products in the U-value calculator may not be available from stock, or be subject to minimum order quantities and extended lead times.